get duration of audio file

Question

I have made a voice recorder app, and I want to show the duration of the recordings in a listview. I save the recordings like this:

MediaRecorder recorder =          


        

Answer 1

Have you looked at Ringdroid?. It's pretty light weight and the integration is straight forward. It works well with VBR media files as well.

For your problem with getting the duration, you might want to do something like below using Ringdroid.

public class AudioUtils
{
    public static long getDuration(CheapSoundFile cheapSoundFile)
    {
        if( cheapSoundFile == null)
            return -1;
        int sampleRate = cheapSoundFile.getSampleRate();
        int samplesPerFrame = cheapSoundFile.getSamplesPerFrame();
        int frames = cheapSoundFile.getNumFrames();
        cheapSoundFile = null;
        return 1000 * ( frames * samplesPerFrame) / sampleRate;
    }

    public static long getDuration(String mediaPath)
    {
        if( mediaPath != null && mediaPath.length() > 0)
            try 
            {
                return getDuration(CheapSoundFile.create(mediaPath, null));
            }catch (FileNotFoundException e){} 
            catch (IOException e){}
        return -1;
    }
}

Hope that helps